Neuro A&P Objectives

Terms in this set (32)

Central Nervous System (CNS) - the complex of nerve tissues that controls the activities of the body. In vertebrates it comprises the brain and spinal cord.
Brain - The major processing unit of the nervous system.
Spinal Cord - has certain processing ability such as that of spinal locomotion and can process reflexes
Peripheral Nervous System (PNS) - The part of the nervous system that consists of the nerves and ganglia on the outside of the brain and spinal cord. The main function of the PNS is to connect the central nervous system (CNS) to the limbs and organs, essentially serving as a communication relay going back and forth between the brain and the extremities.
Sensory (Afferent) Division - Neurons that carry nerve impulses from sensory receptors or sense organs toward the central nervous system
Motor (Efferent) Division - Neurons that carry nerve impulses away from the central nervous system toward the peripheral effector organs (mainly muscles and glands)
Somatic Division - The part of the peripheral nervous system associated with skeletal muscle voluntary control of body movements. The somatic division consists of afferent nerves and efferent nerves.
Autonomic Division - The part of the nervous system responsible for control of the bodily functions not consciously directed, such as breathing, the heartbeat, and digestive processes.
Sympathetic Division - It's general action is to mobilize the body's nervous system fight-or-flight response; it is also constantly active at a basal level to maintain homeostasis.
Parasympathetic Division - It is responsible for stimulation of "rest-and-digest" or "feed and breed" activities that occur when the body is at rest, especially after eating, including sexual arousal, salivation, lacrimation (tears), urination, digestion and defecation.